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2001 Technical Reports

Producing Reliable Software via the Single Model Principle

Richard Paige and Jonathan Ostroff

Technical Report CS-2001-02

York University

May 10, 2001


We contrast software modelling languages and developments that are founded on use of a single model with those founded on use of multiple models. The advantages and disadvantages of each approach are discussed. We propose that to best support seamless and reversible development of reliable software, languages and developments that follow the single model principle are superior for late requirements engineering through to implementation. We define the principle precisely, provide examples of languages that support it, contrast it with multiple model development, and discuss when the principle is insufficient: when dealing with inconsistent descriptions, and for capturing and manipulating early requirements.

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